Then figure a way to make sure the cheaters don't beat the system.
When you get into higher education. Work on projects. Have to produce. Even if a cheater made it that far, they won't last. They always get found out.
When you are in high school, you can cheat. When you are in college and studying something where you write an essay, you can cheat.
If you are taking electronic technology and are told to put together a working traffic system using TTL and only the chips available, you won't pass if you don't know the material. There is no way to cheat.
I remember one instructor bringing a guy up in front of the class. He asked the guy why he got an F when the guy next to him got an A and all of their answers were "identical"?
He then pointed out that even though all the "answers" were identical, the questions were "different". Was it a massive "coincidence"?
It's not hard to stop cheaters.